Canadian Criminal Sentencing/Offences/Incest

Incest
155. (1) Every one commits incest who, knowing that another person is by blood relationship his or her parent, child, brother, sister, grandparent or grandchild, as the case may be, has sexual intercourse with that person.

Punishment
(2) Everyone who commits incest is guilty of an indictable offence and is liable to imprisonment for a term of not more than 14 years and, if the other person is under the age of 16 years, to a minimum punishment of imprisonment for a term of five years.

Defence
(3) No accused shall be determined by a court to be guilty of an offence under this section if the accused was under restraint, duress or fear of the person with whom the accused had the sexual intercourse at the time the sexual intercourse occurred.

Definition of “brother” and “sister”
(4) In this section, “brother” and “sister”, respectively, include half-brother and half-sister.